器件名称: W3E32M72S-250SBI
功能描述: 32Mx72 DDR SDRAM
文件大小: 465.39KB 共19页
简 介:White Electronic Designs
32Mx72 DDR SDRAM
FEATURES
Data rate = 200, 250, 266, 333Mbs Package: 208 Plastic Ball Grid Array (PBGA), 16 x 22mm 2.5V ±0.2V core power supply 2.5V I/O (SSTL_2 compatible) Differential clock inputs (CK and CK#) Commands entered on each positive CK edge Internal pipelined double-data-rate (DDR) architecture; two data accesses per clock cycle Programmable Burst length: 2,4 or 8 Bidirectional data strobe (DQS) transmitted/ received with data, i.e., source-synchronous data capture (one per byte) DQS edge-aligned with data for READs; centeraligned with data for WRITEs DLL to align DQ and DQS transitions with CK Four internal banks for concurrent operation Data mask (DM) pins for masking write data (one per byte) Programmable IOL/IOH option Auto precharge option Auto Refresh and Self Refresh Modes Commercial, Industrial and Military TemperatureRanges Organized as 32M x 72 Weight: W3E32M72S-XSBX - 2.5 grams typical
W3E32M72S-XSBX
BENEFITS
73% Space Savings vs. TSOP 44% Space Savings vs FPBGA Reduced part count 37% I/O reduction vs TSOP 31% I/O reduction vs FPBGA Reduced trace lengths for lower parasitic capacitance Suitable for hi-reliability applications Laminate interposer for optimum TCE match Upgradeable to 64M x 72 density (contact factory for information)
GENERAL DESCRIPTION
The 256MByte (2Gb) DDR SDRAM is a high-speed CMOS, dynamic random-access, memory using 5 chips containing 536,870,912 bits. Each chip is internall……
